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A002841 Number of 3-connected self-dual planar graphs with 2n edges.
(Formerly M1615 N0631)
1
1, 1, 2, 6, 16, 50, 165, 554, 1908, 6667, 23556 (list; graph; refs; listen; history; text; internal format)
OFFSET

3,3

COMMENTS

Also number of self-dual polyhedra with n+1 vertices (and n+1 faces). - Franklin T. Adams-Watters, Dec 18 2006

REFERENCES

M. B. Dillencourt, Polyhedra of small orders and their Hamiltonian properties. Tech. Rep. 92-91, Info. and Comp. Sci. Dept., Univ. Calif. Irvine, 1992.

P. J. Federico, Enumeration of polyhedra: the number of 9-hedra, J. Combin. Theory, 7 (1969), 155-161.

N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence).

N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).

LINKS

Table of n, a(n) for n=3..13.

CROSSREFS

Cf. A000944.

Sequence in context: A195645 A000136 A013989 * A136509 A100664 A214983

Adjacent sequences:  A002838 A002839 A002840 * A002842 A002843 A002844

KEYWORD

nonn,nice,more

AUTHOR

N. J. A. Sloane.

EXTENSIONS

Definition corrected by Gordon F. Royle, Dec 15 2005

STATUS

approved

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Last modified October 24 09:28 EDT 2014. Contains 248516 sequences.